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以国内移动通信产业为研究对象,通过建立移动运营商之间Hotelling模型,综合分析了转换成本变化与消费者不知情问题同时存在时,实施移动号码携带后我国移动通信市场的分配效应和福利。首次验证了号码携带在我国移动通信产业的适用性和局限性,为电信产业改革和规制政策制定提供了理论依据。 相似文献
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加入世贸组织后,因为经济环境的变化,在旧有垄断尚未打坡的基础上,新的垄断又会不断产生,并且新旧垄断作用将直接导致垄断加剧,垄断行为复杂,垄断领域扩大,垄断危害加深的后果,为此,我国的反垄断必须在法律的健全与完善,经济政治体制的改革及反垄断执行机构设置与人员培训等方面出出积极的反应,以保障市场的公平自由竞争,实现市场的有效有序运行和对消费者权益保护。 相似文献
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参与标准竞争日益成为市场竞争的一个新特征。现有文献对标准竞争在消费者市场影响机理的研究还非常有限。通过实验法探讨了标准竞争如何影响消费者新产品购买行为。研究结果表明:消费者在做购买决策过程中受到不同类型不确定性的影响;标准竞争对购买决策过程产生调节作用,使得消费者更加关注成本等限制性因素,因此成本相关的不确定性对消费者在标准竞争市场上的新产品购买决策具有更强的影响力。 相似文献
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微软垄断案的启示－产业组织理论角度的思考 总被引：5，自引：0，他引：5
微软垄断案已尘埃落定,但留给人们很多的法律思考。本从产业组织理论的角度对微软垄断案进行经济学再思考。在追述微软垄断案的简况后,本分析了垄断与垄断链的社会成本,探讨垄断性市场结构对技术创新激励的破坏,最后研究微软垄断案对我国制定反垄断与促进竞争政策的启示。 相似文献
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[研究目的]数字经济时代,数据隐私保护与反垄断监管之间的交集与冲突将产生新的监管协同问题。为此,亟需明确数据隐私保护与反垄断监管的协同基础并构建协同机制。[研究方法]通过案例分析与比较研究等方法,结合德国、法国、英国等最新典型案件,对同时造成数据隐私损害与竞争损害、提升数据隐私保护水平但有损市场竞争、提升市场可竞争性但危及数据隐私保护的行为展开类型化分析,归纳并阐述域外司法辖区处理数据隐私保护与反垄断监管协同问题的有益经验。[研究结论]就经济理据而言,数据隐私保护与反垄断监管的协同实施有助于克服信息不对称与市场力量不对称所引发的“双重市场失灵”;就价值理据而言,数据隐私保护所主张的个人自治与数据利用平衡立场与反垄断监管所倡导的消费者选择与经济效率多元目标之间存在高度契合。在此基础上,可从规则衔接与冲突化解方面进一步推进数据隐私保护与反垄断监管的协同实施。 相似文献
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本文以汇源并购案为依托,考察了我国外资并购反垄断中的企业并购效应和反垄断执行标准等问题。从经济学的角度分析了案件被否的原因。同时,对我国反垄断制度的完善提出了若干建议。 相似文献
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经过近十多年的快速发展,我国房地产市场逐渐趋于成熟,竞争愈发激烈,消费者购房日趋理性,房地产市场已经进入一个更专业、更追求品质、更注重消费者满意的时代.在消费者对市场影响力逐渐增强的趋势下,如何更好地了解和把握消费者购房时考虑的因素是极具现实意义的问题.本文从不同角度分析我国住宅消费者购买行为的特征,以期和当前的政策、市场环境相联系,分析我国房市在近期的发展趋势. 相似文献
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与封闭经济相比，开放经济条件下的反垄断更复杂，更特殊，更难以处理。文章在分析外国政府反垄断政策出现的一些新的变化的基础上，指出中国由于反垄断法的缺失导致了国内市场利益和国外市场利益的双重流失，并根据开放经济条件下反垄断的特殊性和难点相应设计了中国反垄断制度的构建，即：中国应建立独立的反垄断机构；采用温和型的反垄断模式；借鉴发达国家的适用除外制度和域外适用制度来保护国民利益；注重反垄断制度与其它制度的协调。 相似文献
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A research group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol-a chemical found in the skins of red grapes in red wine-can improve the sensitivity of mice to the hormone insulin according to a report in the October issue of Cell Metabolism.…… 《中国科学院院刊(英文版)》2008,22(1):14-15
Aresearch group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol--a chemical found in the skins of red grapes and in red wine--can improve the sensitivity of mice to the hormone insulin, according to a report in the October,2007 issue of Cell Metabolism. As insulin resistance is often characterized as the most critical factor contributing to the development of Type 2 diabetes, the findings“provide a potential new therapeutic approach for preventing or treating” both conditions, the researchers said. 相似文献
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《中国科学院院刊(英文版)》2008,22(1):2-3
CAS should stick to the principle of rendering service to, and giving impetus for, the development of China＇s science enterprise by making S＆T innovations, said CAS President LU Yongxiang. The CAS president made the remarks in a recent talk to communicate the gist of the winter session of the Party＇s Leading-member Group at CAS, which was held from 7 to 11 January in Beijing. 相似文献
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Marjorie Armstrong-Stassen Margaret Landstrom Ramona Lumpkin 《The Information Society》1998,14(2):153-164
This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors. 相似文献
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《中国科学院院刊(英文版)》2008,22(1)
With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants." 相似文献
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A joint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology his co-workers from Norway US Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells suggesting that China's projected climate warming could decrease the pest's numbers. The study was published in Proceedings of the National Academy of Sciences on September .…… 《中国科学院院刊(英文版)》2008,22(1):6-7
Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007. 相似文献
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Caroline Haythornthwaite 《The Information Society》2001,17(3):211-226
A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction. 相似文献
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Active biological molecules functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery disease diagnosis therapy new nanodevice construction.…… 《中国科学院院刊(英文版)》2008,22(1):22-22
Active biological molecules and functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery, disease diagnosis and therapy, and new nanodevice construction. 相似文献
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Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies. 相似文献
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Leah A. Lievrouw 《The Information Society》2000,16(2):155-159
This essay focuses on universal service and the Internet as means to support social and political participation. The emphasis on access to telecommunications systems in conventional approaches to universal service is contrasted with access to content. A model of the information environment is described that accounts for the roles of content and conduit, both of which are necessary conditions to achieve true access. A method is outlined for employing information indicators to observe or measure the information environment. 相似文献
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Puay Tang 《The Information Society》1998,14(1):19-31
The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means. 相似文献